In the United States and the European Union (EU), political incentives to oppose cross-border banking have been strong in spite of the measurable benefits to the real economy from breaking down geographic barriers. Even a federal-level supervisor and safety net are not by themselves sufficient...

Using novel data on individual euro area banks' balance sheets this paper shows that exposure to stressed European sovereigns manifested in a liquidity shock to their international funding through two channels: (i) a contraction in cross-border funding, and (ii) a contraction in US wholesale...